Home / 98,068.06-135,329.66-54,457.90

Finding the Fourth Proportional to 98,068.06, 135,329.66 and 54,457.90

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Solution

The fourth proportional to 98,068.06, 135,329.66 and 54,457.90 is: 75,149.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,068.06 : 135,329.66 = 54,457.90 : x
  2. Step 2: Convert to fraction form
    98,068.06/135,329.66 = 54,457.90/x
  3. Step 3: Cross multiply
    98,068.06x = 135,329.66 × 54,457.90
  4. Step 4: Simplify right side
    98,068.06x = 7,369,769,091.31
  5. Step 5: Solve for x
    x = 7,369,769,091.31/98,068.06
  6. Step 6: Final answer
    x = 75,149.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.